Philip lange



(No Model.)

, P LANGE. APPARATUS FOR CONNECTING ALTERNATE CURRENT DYNAMOS.

Patented May 29, 1888.

&dwa w/ UNITED STATES PATENT OFFICE.

PHILlP LANGE, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE VEST- INGHOUSEELECTRIC COMPANY, OF SAME PLACE.

APPARATUS FOR CONNECTING ALTERNATE-CURRENT DYNAMOS.

SPECIFICATION forming part of Letters Patent No. 383,648, dated May 29,1888.

(No model.)

To aZZ whom it may concern:

Be it known that I, PHILIP LANGE, a citizen of the United States,residing in Pittsburg, in the county of Allegheny, in the State ofPennsylvania, have invented certain new and useful Improvements inApparatus for Connecting Alternate-Current Electric Generators, of whichthe following is a specification.

The invention relates to an organization of to apparatus and circuitsfor connecting alternate-current electric generators in multiplearccircuit.

The object of the invention is to provide convenient means whereby therelative phases of the currents delivered by several differentalternate-current generators may be readily determined, and deviceswhereby the machines may be connected together in multiplearc orparallel circuit at the proper moments.

In certain applications for Letters Patent filed by Oliver B.Shallenberger, Serial Nos. 220,909 and 224,523, there are described amethod and an apparatus for connecting alterhate-current machines in themanner set forth. 2 The present invention involves certain im provementsin the construction of the switchboard, so that more than two generatorsmay be connected in multiple arc in a convenient manner by employing asingle indicator.

in the accompanying drawing there is shown, partly in diagram, anorganization of four electric generators delivering alternating currentsand a single switchboard and indicating device for the same.

5 Referring to the figure, A, A", A and A represent fouralternate-current electric generators of convenient type, and L Lmain-line conductors leading to any desired worlecircuit. The generatorsare capable of being connected in multiple are with the lines L and L orwith sections Z, Z, Z, and Z at will by conductors a b a b", &c.,through switches h M, M, and M. The sections of the line L L may beconnected or disconnected by switches N, N, and N Thus, when it isdesired to feed separate circuits from the differcntgenerators, theswitches may be opened. In order to insure that any given machine shallbe connected with the lines at a moment when the current which it isdelivering is such as would combine with the current being delivered tothe lines by another generator and flow in the same direction upon theworlccircuit, the indicating device C is employed. This device consistsof a primary coil, 1), and a secondary coil, s,wound upon a core, 0. Theterminals of the secondary coil are connected through the filament of anincandescent electric lamp, H. The respective terminals of the primarycoil are connected with a binding-post, B", and one arm, 0 of a switch,E. The c0ntact-point e" of this switch is connected with a bindingpost,B. The point e of the arm 6 is connected with a binding-post, B". Thebindingpost B is connected with the arm 6, and thus the posts B and Bmay be connected with each other through the switch-arm e. The binding-posts B and B are respectively connected by conductors 1 and 2 withthe switch-arms s and s" of a switch, S, carried upon a switch board, T.The bindingposts B" and B are respectively connected with theswitch-arms s and sofa switch, 8*, carried upon theswitchboard T. Uponthe switchboard T there are eight binding-posts, t t t 25* and 1/11 '0".The posts t t t t* are respectively connected by conductors u, a", a,and a with the conductors a a a at leading from one pole of each of therespective dynamos. The conductors v c" c if are connected in likemanner by conductors w w" 10 10* with the conductors b, 1)", b and 1),leading from the other poles of the respective dynamos. The points t, t,and t are connected, respectively, also, with switch-pointsffifflappliedto the switch-arm s of theswitch S, and the point tis connected with aswitclrpoint, applied to the switcharm 5 of the switch S The pointsfandj' are also connected with the switch-points g and g, respectivelyapplied to the switch-arm s. The points 1:, if, and v are connected withthe switch-points hh' h", applied to theswitcharm 8 of the switch S, andthe point if is connected with a point, 25 applied to the switcharm 8 ofthe switch S The points If and h are respectively connected with thepoints k and k of the switch-arm s Supposing that the generators A, Aand A are already connected with the lines L and L in multiple are, andit is desired to add the est degree and yield little or no light.

generator A the operation of the apparatus is as follows: If the switchS is in the position shown in the drawing, with its arms in contact withthe points f and h, respectively, then the respective poles of thegenerator A will be connected with the binding-posts B and B of thesynchronizing device 0. From the post 13 the connections may be tracedto the arm 6 through the primary coil p, thence through the point e tothe binding-post B, thence through the conductor 4 to the switcharm 8and thence through the point is and line ra to the conductor 1), andthus with the pole of the generator A corresponding to the pole of thegenerator A, which is connected with the post 13 The other pole of thisgenerator A is connected through conductors a and a to the point 9thence through the switcharm 8 to the binding-post B thence through thearm 6 to the binding-post B and through the conductor 1 to the switcharm 8, thence through the pointf and conductor a to the conductor a,leading from the corresponding pole of the generator A. The circuit ofthe generator A is thus completed through the primary coil of theconverter in the indicating device 0. If the current thus derived fromthe generator A is such that its phases combine and flow in the samedirection with those from the generator A, then the lamp H will burn atits highest brilliancy. If, however, they oppose each other, itwill burnat itslow- This will indicate the relative phases of the two generatorsand the proper moment at which the generator A may be connected intocircuit with the lines L and L through its switch M, such moment beingwhen the lamp H is atits .minimnm brilliancy.

For the purpose of connecting the individual generators into circuit, asrequired in any required combination, the switch-board T sufiices, forby means of it any two of the series of generators may be connectedthrough the indicating device. Thus in the position shown the generatorA will be synchronized with the generator A, and vice versa. If theswitch S be moved to the points f and if, then the generators A and Amay be synchronized. If the generators A and A are to be I claim as myinvention- 1. The combination, with three or more alternate-currentelectric generators, of a switchboard for synchronizing the same,consisting of two double-point switches, contact-points for therespectivearms of one switch connected with the respective poles of saidgenerators, contact-points for the respective arms of the second switchconnected with said poles, and an indicating device included in circuitbetween the respective switches.

2. The combination, with the alternate-current generators A, A, and A,of the switches S and S their contact-points f f 2 h hg g k k, theindicating device G,connected between the switches, electricalconnections from the respective poles of the generator A with thepointsf h, respectively, connections from the respective poles of thegenerator A with the points 9 and k, respectively, andelectricalconnections from the respective poles of the generator A with pointsf gand h It.

3. A switch-board for connecting different alternatecurrent generatorsthrough an indicating device consisting of two switches, each having twocontact-arms and each arm having contact-points, conductors leading fromone pole of each generator except one to the respective contact-pointsof one arm of one switch, conductors leading from the other poles of thesame generators to the respective contact-points of the other arm of thesame switch, and similar electric connections from the respective polesof all the generators except one of the first-named with thecontactpoints ofthe respective arms of the remaining switch.

4. A switch-board for connecting diiferent alternatecurrent generatorsthrough an indicating device consisting of two switches, each having twocontact-arms and each arm hav ing contact points, conductors leadingfrom one pole of each generator to the contactpoints of one arm of eachswitch, conductors leading from the remainingpoles to the coutact-pointsof the remaining arms, and an indicating device included in circuitbetween said switches.

In testimony whereofI have hereunto subscribed my name this 5th day ofSeptember, AD. 1887.

PHILIP LANGE.

Witnesses:

W. D. UPTEGRAFF, DANL. W. EDGEOOMB.

